Navit is a open source (GPL) car navigation system with routing engine. It s modular design is capable of using vector maps of various formats for routing and rendering of the displayed map. It s even possible to use multiple maps at a time.

使用MAPX4.0组件用DELPHPI6.0编写的gps和GIS管理程序。mapx for csharp。mapx和arcgis engine和arcgis server,AO，MO，google map一样都是GIS开发组件。-Use MAPX4.0 components prepared with DELPHPI6.0, and GIS Manager gps. mapx for csharp. mapx and arcgis engine and arcgis server, AO, MO